Opisthokonta Cavalier-Smith, 1987
Count: 30p;8f;2g
   Metazoa [Haeckel 1874]
  Count: [p] 30p;8f;2g
     Epitheliozoa Ax, 1996
    Count: [p] 29p;8f;2g
       Eumetazoa [Bütschli, 1910]
      Count: [p] 28p;8f;2g
         Acrosomata Ax, 1996
        Count: [p] 27p;8f;1g
           Bilateria [Hatschek, 1888]
          Count: [p] 26p;8f;1g
             Protostomia [Grobben, 1908]
            Count: [p] 23p;5f;1g
               Lophotrochozoa Halanych et al., 1995
              Count: [p] 13p;5f;1g
                 1 Lophophorata [Hyman, 1959]
                Count: [p] 2p;2f
                 2 Spiralia [Schleip, 1929]
                Count: [p] 11p;3f;1g